Although E-Government Affairs have become remarkable in recent years, the study in this field is still at the very beginning, and it needs the support of all sorts of theory and practice urgently. By analyzing the characteristic of E-Government Affairs, Based on the practice of system development, the paper discusses the characteristic and classifications of metadata in E-government affairs system, meanwhile, taking against of the background of the large-sized software engineering "Office and Business Resource System of Hangzhou City", the paper presents an E-Government Affairs software Architecture based on metadata management. Finally, the paper analyzes and illustrates the software Architecture.
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